Trigger block



FIG. 1 is a front perspective view of my new and ornamental design for a trigger block;

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image of the left side;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of in FIG. 2 is for illustrative purposes only and forms no part of the claimed design. 

I claim the ornamental design for a trigger block, as shown and described. 